Turn BMP images into PNG. It is converted in your browser, so the file never leaves your device.
Drop BMP files here
or choose from your computer paste with Ctrl V
from Photos or Files
Ready · other file types work too0 bytes uploaded, ever
Drop BMP files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.
Press Convert. Open Options first if you want to change the defaults. The work happens in this tab.
Save the PNG, or download everything as one ZIP if you converted several files.
The BMP to PNG converter is part of this page and runs inside your browser. Your images are never sent to ToAny or to anyone else.
Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.
No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.
BMP files are uncompressed, so they are many times larger than they need to be. PNG keeps every pixel exactly and supports transparent backgrounds. BMP is at home in legacy Windows software and embedded devices; PNG is the usual choice for screenshots, logos, graphics with text or transparency.
The defaults suit most files. Under Options you can resize the result.
BMP is the plain Windows bitmap: pixels written out with little or no compression. The files are enormous compared with PNG or JPG, but the format is so simple that old software, printers and microcontroller displays still ask for it.
Opens in Windows, macOS and most image apps; too large for the web
BMP converterPNG stores every pixel exactly, with optional transparency. It was created as a patent-free replacement for GIF and is the standard for screenshots, logos and interface graphics. Photos saved as PNG are several times larger than the same photo as JPG.
Opens in Every browser, phone and image app
PNG converter| BMPBitmap image | PNGPNG image | |
|---|---|---|
| Stands for | Bitmap | Portable Network Graphics |
| Type | Raster image | Raster image |
| Compression | Usually none | Lossless |
| Transparency | Rarely (32-bit variants only) | Yes, full alpha channel |
| Animation | No | No (the APNG extension aside) |
| Introduced | The late 1980s, by Microsoft | 1996, by the PNG Development Group |
| Opens in | Windows, macOS and most image apps; too large for the web | Every browser, phone and image app |
| Best for | Legacy Windows software and embedded devices | Screenshots, logos, graphics with text or transparency |
| File extension | .bmp, .dib | .png |
No. The BMP to PNG conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.
No further quality is lost: PNG stores the decoded pixels exactly. The result is identical in content.
Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.
The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the BMP file, press Convert and save the PNG. There is nothing to install.
Pictures of up to 120 megapixels are accepted (for example 12,000 by 10,000 pixels); a larger one is refused with a message. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.